package net.minecraft.client.gui;

import io.netty.buffer.Unpooled;
import java.io.IOException;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.client.resources.I18n;
import net.minecraft.entity.IMerchant;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.ContainerMerchant;
import net.minecraft.item.ItemStack;
import net.minecraft.network.PacketBuffer;
import net.minecraft.network.play.client.C17PacketCustomPayload;
import net.minecraft.util.IChatComponent;
import net.minecraft.util.ResourceLocation;
import net.minecraft.village.MerchantRecipe;
import net.minecraft.village.MerchantRecipeList;
import net.minecraft.world.World;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class GuiMerchant extends GuiContainer {
	private static final Logger logger = LogManager.getLogger();

	/** The GUI texture for the villager merchant GUI. */
	private static final ResourceLocation MERCHANT_GUI_TEXTURE = new ResourceLocation(
			"textures/gui/container/villager.png");

	/** The current IMerchant instance in use for this specific merchant. */
	private IMerchant merchant;

	/** The button which proceeds to the next available merchant recipe. */
	private GuiMerchant.MerchantButton nextButton;

	/** Returns to the previous Merchant recipe if one is applicable. */
	private GuiMerchant.MerchantButton previousButton;

	/**
	 * The integer value corresponding to the currently selected merchant recipe.
	 */
	private int selectedMerchantRecipe;

	/** The chat component utilized by this GuiMerchant instance. */
	private IChatComponent chatComponent;

	public GuiMerchant(InventoryPlayer p_i45500_1_, IMerchant p_i45500_2_, World worldIn) {
		super(new ContainerMerchant(p_i45500_1_, p_i45500_2_, worldIn));
		this.merchant = p_i45500_2_;
		this.chatComponent = p_i45500_2_.getDisplayName();
	}

	/**
	 * Adds the buttons (and other controls) to the screen in question. Called when
	 * the GUI is displayed and when the window resizes, the buttonList is cleared
	 * beforehand.
	 */
	public void initGui() {
		super.initGui();
		int i = (this.width - this.xSize) / 2;
		int j = (this.height - this.ySize) / 2;
		this.buttonList.add(this.nextButton = new GuiMerchant.MerchantButton(1, i + 120 + 27, j + 24 - 1, true));
		this.buttonList.add(this.previousButton = new GuiMerchant.MerchantButton(2, i + 36 - 19, j + 24 - 1, false));
		this.nextButton.enabled = false;
		this.previousButton.enabled = false;
	}

	/**
	 * Draw the foreground layer for the GuiContainer (everything in front of the
	 * items). Args : mouseX, mouseY
	 */
	protected void drawGuiContainerForegroundLayer(int mouseX, int mouseY) {
		String s = this.chatComponent.getUnformattedText();
		this.fontRendererObj.drawString(s, this.xSize / 2 - this.fontRendererObj.getStringWidth(s) / 2, 6, 4210752);
		this.fontRendererObj.drawString(I18n.format("container.inventory", new Object[0]), 8, this.ySize - 96 + 2,
				4210752);
	}

	/**
	 * Called from the main game loop to update the screen.
	 */
	public void updateScreen() {
		super.updateScreen();
		MerchantRecipeList merchantrecipelist = this.merchant.getRecipes(this.mc.thePlayer);

		if (merchantrecipelist != null) {
			this.nextButton.enabled = this.selectedMerchantRecipe < merchantrecipelist.size() - 1;
			this.previousButton.enabled = this.selectedMerchantRecipe > 0;
		}
	}

	/**
	 * Called by the controls from the buttonList when activated. (Mouse pressed for
	 * buttons)
	 */
	protected void actionPerformed(GuiButton button) throws IOException {
		boolean flag = false;

		if (button == this.nextButton) {
			++this.selectedMerchantRecipe;
			MerchantRecipeList merchantrecipelist = this.merchant.getRecipes(this.mc.thePlayer);

			if (merchantrecipelist != null && this.selectedMerchantRecipe >= merchantrecipelist.size()) {
				this.selectedMerchantRecipe = merchantrecipelist.size() - 1;
			}

			flag = true;
		} else if (button == this.previousButton) {
			--this.selectedMerchantRecipe;

			if (this.selectedMerchantRecipe < 0) {
				this.selectedMerchantRecipe = 0;
			}

			flag = true;
		}

		if (flag) {
			((ContainerMerchant) this.inventorySlots).setCurrentRecipeIndex(this.selectedMerchantRecipe);
			PacketBuffer packetbuffer = new PacketBuffer(Unpooled.buffer());
			packetbuffer.writeInt(this.selectedMerchantRecipe);
			this.mc.getNetHandler().addToSendQueue(new C17PacketCustomPayload("MC|TrSel", packetbuffer));
		}
	}

	/**
	 * Args : renderPartialTicks, mouseX, mouseY
	 */
	protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
		GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
		this.mc.getTextureManager().bindTexture(MERCHANT_GUI_TEXTURE);
		int i = (this.width - this.xSize) / 2;
		int j = (this.height - this.ySize) / 2;
		this.drawTexturedModalRect(i, j, 0, 0, this.xSize, this.ySize);
		MerchantRecipeList merchantrecipelist = this.merchant.getRecipes(this.mc.thePlayer);

		if (merchantrecipelist != null && !merchantrecipelist.isEmpty()) {
			int k = this.selectedMerchantRecipe;

			if (k < 0 || k >= merchantrecipelist.size()) {
				return;
			}

			MerchantRecipe merchantrecipe = (MerchantRecipe) merchantrecipelist.get(k);

			if (merchantrecipe.isRecipeDisabled()) {
				this.mc.getTextureManager().bindTexture(MERCHANT_GUI_TEXTURE);
				GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
				GlStateManager.disableLighting();
				this.drawTexturedModalRect(this.guiLeft + 83, this.guiTop + 21, 212, 0, 28, 21);
				this.drawTexturedModalRect(this.guiLeft + 83, this.guiTop + 51, 212, 0, 28, 21);
			}
		}
	}

	/**
	 * Draws the screen and all the components in it. Args : mouseX, mouseY,
	 * renderPartialTicks
	 */
	public void drawScreen(int mouseX, int mouseY, float partialTicks) {
		super.drawScreen(mouseX, mouseY, partialTicks);
		MerchantRecipeList merchantrecipelist = this.merchant.getRecipes(this.mc.thePlayer);

		if (merchantrecipelist != null && !merchantrecipelist.isEmpty()) {
			int i = (this.width - this.xSize) / 2;
			int j = (this.height - this.ySize) / 2;
			int k = this.selectedMerchantRecipe;
			MerchantRecipe merchantrecipe = (MerchantRecipe) merchantrecipelist.get(k);
			ItemStack itemstack = merchantrecipe.getItemToBuy();
			ItemStack itemstack1 = merchantrecipe.getSecondItemToBuy();
			ItemStack itemstack2 = merchantrecipe.getItemToSell();
			GlStateManager.pushMatrix();
			RenderHelper.enableGUIStandardItemLighting();
			GlStateManager.disableLighting();
			GlStateManager.enableRescaleNormal();
			GlStateManager.enableColorMaterial();
			GlStateManager.enableLighting();
			this.itemRender.zLevel = 100.0F;
			this.itemRender.renderItemAndEffectIntoGUI(itemstack, i + 36, j + 24);
			this.itemRender.renderItemOverlays(this.fontRendererObj, itemstack, i + 36, j + 24);

			if (itemstack1 != null) {
				this.itemRender.renderItemAndEffectIntoGUI(itemstack1, i + 62, j + 24);
				this.itemRender.renderItemOverlays(this.fontRendererObj, itemstack1, i + 62, j + 24);
			}

			this.itemRender.renderItemAndEffectIntoGUI(itemstack2, i + 120, j + 24);
			this.itemRender.renderItemOverlays(this.fontRendererObj, itemstack2, i + 120, j + 24);
			this.itemRender.zLevel = 0.0F;
			GlStateManager.disableLighting();

			if (this.isPointInRegion(36, 24, 16, 16, mouseX, mouseY) && itemstack != null) {
				this.renderToolTip(itemstack, mouseX, mouseY);
			} else if (itemstack1 != null && this.isPointInRegion(62, 24, 16, 16, mouseX, mouseY)
					&& itemstack1 != null) {
				this.renderToolTip(itemstack1, mouseX, mouseY);
			} else if (itemstack2 != null && this.isPointInRegion(120, 24, 16, 16, mouseX, mouseY)
					&& itemstack2 != null) {
				this.renderToolTip(itemstack2, mouseX, mouseY);
			} else if (merchantrecipe.isRecipeDisabled() && (this.isPointInRegion(83, 21, 28, 21, mouseX, mouseY)
					|| this.isPointInRegion(83, 51, 28, 21, mouseX, mouseY))) {
				this.drawCreativeTabHoveringText(I18n.format("merchant.deprecated", new Object[0]), mouseX, mouseY);
			}

			GlStateManager.popMatrix();
			GlStateManager.enableLighting();
			GlStateManager.enableDepth();
			RenderHelper.enableStandardItemLighting();
		}
	}

	public IMerchant getMerchant() {
		return this.merchant;
	}

	static class MerchantButton extends GuiButton {
		private final boolean field_146157_o;

		public MerchantButton(int buttonID, int x, int y, boolean p_i1095_4_) {
			super(buttonID, x, y, 12, 19, "");
			this.field_146157_o = p_i1095_4_;
		}

		public void drawButton(Minecraft mc, int mouseX, int mouseY) {
			if (this.visible) {
				mc.getTextureManager().bindTexture(GuiMerchant.MERCHANT_GUI_TEXTURE);
				GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
				boolean flag = mouseX >= this.xPosition && mouseY >= this.yPosition
						&& mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;
				int i = 0;
				int j = 176;

				if (!this.enabled) {
					j += this.width * 2;
				} else if (flag) {
					j += this.width;
				}

				if (!this.field_146157_o) {
					i += this.height;
				}

				this.drawTexturedModalRect(this.xPosition, this.yPosition, j, i, this.width, this.height);
			}
		}
	}
}
